Add short help doc in configuration for nginx limit rate
Add short help doc in configuration for nginx limit rate

caicloud/ingress,kubernetes/ingress-nginx,caicloud/ingress,nicksardo/ingress,kubernetes/ingress-nginx,danielqsj/ingress,kubernetes/ingress-nginx,nicksardo/ingress,canhnt/ingress,nicksardo/ingress,chentao1596/ingress,canhnt/ingress,aledbf/ingress-nginx,aledbf/ingress-nginx,jcmoraisjr/ingress,kubernetes/ingress-nginx,aledbf/ingress-nginx,chentao1596/ingress,jcmoraisjr/ingress,nicksardo/ingress,danielqsj/ingress,kubernetes/ingress-gce,kubernetes/ingress-nginx,jcmoraisjr/ingress,kubernetes/ingress-gce,canhnt/ingress,caicloud/ingress,canhnt/ingress,aledbf/ingress-nginx,caicloud/ingress